# encoding:utf-8 import os.path import time, datetime, random import logging from django.core.files.storage import FileSystemStorage from django.shortcuts import render_to_response, get_object_or_404 from django.http import HttpResponseRedirect, HttpResponse, Http404 from django.template import RequestContext from django.utils.html import * from django.utils import simplejson from django.utils.translation import ugettext as _ from django.core.urlresolvers import reverse from django.core.exceptions import PermissionDenied from forum.actions import AskAction, AnswerAction, ReviseAction, RollbackAction, RetagAction from forum.forms import * from forum.models import * from forum.forms import get_next_url from forum.utils import html def upload(request):#ajax upload file to a question or answer class FileTypeNotAllow(Exception): pass class FileSizeNotAllow(Exception): pass class UploadPermissionNotAuthorized(Exception): pass xml_template = "%s" try: f = request.FILES['file-upload'] # check upload permission if not request.user.can_upload_files(): raise UploadPermissionNotAuthorized() # check file type try: file_name_suffix = os.path.splitext(f.name)[1].lower() except KeyError: raise FileTypeNotAllow() if not file_name_suffix in ('.jpg', '.jpeg', '.gif', '.png', '.bmp', '.tiff', '.ico'): raise FileTypeNotAllow() storage = FileSystemStorage(str(settings.UPFILES_FOLDER), str(settings.UPFILES_ALIAS)) new_file_name = storage.save("_".join(f.name.split()), f) # check file size # byte size = storage.size(new_file_name) if size > float(settings.ALLOW_MAX_FILE_SIZE) * 1024 * 1024: storage.delete(new_file_name) raise FileSizeNotAllow() result = xml_template % ('Good', '', str(settings.UPFILES_ALIAS) + new_file_name) except UploadPermissionNotAuthorized: result = xml_template % ('', _('uploading images is limited to users with >60 reputation points'), '') except FileTypeNotAllow: result = xml_template % ('', _("allowed file types are 'jpg', 'jpeg', 'gif', 'bmp', 'png', 'tiff'"), '') except FileSizeNotAllow: result = xml_template % ('', _("maximum upload file size is %sM") % settings.ALLOW_MAX_FILE_SIZE, '') except Exception, e: result = xml_template % ('', _('Error uploading file. Please contact the site administrator. Thank you. %s' % e), '') return HttpResponse(result, mimetype="application/xml") def ask(request): form = None if request.POST: if request.session.pop('reviewing_pending_data', False): form = AskForm(initial=request.POST, user=request.user) elif "text" in request.POST: form = AskForm(request.POST, user=request.user) if form.is_valid(): if request.user.is_authenticated() and request.user.email_valid_and_can_ask(): ask_action = AskAction(user=request.user, ip=request.META['REMOTE_ADDR']).save(data=form.cleaned_data) question = ask_action.node if settings.WIKI_ON and request.POST.get('wiki', False): question.nstate.wiki = ask_action return HttpResponseRedirect(question.get_absolute_url()) else: request.session['pending_submission_data'] = { 'POST': request.POST, 'data_name': _("question"), 'type': 'ask', 'submission_url': reverse('ask'), 'time': datetime.datetime.now() } if request.user.is_authenticated(): request.user.message_set.create(message=_("Your question is pending until you %s.") % html.hyperlink( reverse('send_validation_email'), _("validate your email") )) return HttpResponseRedirect(reverse('index')) else: return HttpResponseRedirect(reverse('auth_signin')) elif "go" in request.POST: form = AskForm({'title': request.POST['q']}, user=request.user) if not form: form = AskForm(user=request.user) return render_to_response('ask.html', { 'form' : form, }, context_instance=RequestContext(request)) def edit_question(request, id): question = get_object_or_404(Question, id=id) if question.nis.deleted and not request.user.can_view_deleted_post(question): raise Http404 if request.user.can_edit_post(question): return _edit_question(request, question) elif request.user.can_retag_questions(): return _retag_question(request, question) else: raise Http404 def _retag_question(request, question): if request.method == 'POST': form = RetagQuestionForm(question, request.POST) if form.is_valid(): if form.has_changed(): RetagAction(user=request.user, node=question, ip=request.META['REMOTE_ADDR']).save(data=dict(tagnames=form.cleaned_data['tags'])) return HttpResponseRedirect(question.get_absolute_url()) else: form = RetagQuestionForm(question) return render_to_response('question_retag.html', { 'question': question, 'form' : form, #'tags' : _get_tags_cache_json(), }, context_instance=RequestContext(request)) def _edit_question(request, question): if request.method == 'POST': revision_form = RevisionForm(question, data=request.POST) revision_form.is_valid() revision = question.revisions.get(revision=revision_form.cleaned_data['revision']) if 'select_revision' in request.POST: form = EditQuestionForm(question, request.user, revision) else: form = EditQuestionForm(question, request.user, revision, data=request.POST) if not 'select_revision' in request.POST and form.is_valid(): if form.has_changed(): action = ReviseAction(user=request.user, node=question, ip=request.META['REMOTE_ADDR']).save(data=form.cleaned_data) if settings.WIKI_ON: if request.POST.get('wiki', False) and not question.nis.wiki: question.nstate.wiki = action elif question.nis.wiki and (not request.POST.get('wiki', False)) and request.user.can_cancel_wiki(question): question.nstate.wiki = None else: if not revision == question.active_revision: RollbackAction(user=request.user, node=question).save(data=dict(activate=revision)) return HttpResponseRedirect(question.get_absolute_url()) else: revision_form = RevisionForm(question) form = EditQuestionForm(question, request.user) return render_to_response('question_edit.html', { 'question': question, 'revision_form': revision_form, 'form' : form, #'tags' : _get_tags_cache_json() }, context_instance=RequestContext(request)) def edit_answer(request, id): answer = get_object_or_404(Answer, id=id) if answer.deleted and not request.user.can_view_deleted_post(answer): raise Http404 elif not request.user.can_edit_post(answer): raise Http404 if request.method == "POST": revision_form = RevisionForm(answer, data=request.POST) revision_form.is_valid() revision = answer.revisions.get(revision=revision_form.cleaned_data['revision']) if 'select_revision' in request.POST: form = EditAnswerForm(answer, request.user, revision) else: form = EditAnswerForm(answer, request.user, revision, data=request.POST) if not 'select_revision' in request.POST and form.is_valid(): if form.has_changed(): action = ReviseAction(user=request.user, node=answer, ip=request.META['REMOTE_ADDR']).save(data=form.cleaned_data) if settings.WIKI_ON: if request.POST.get('wiki', False) and not answer.nis.wiki: answer.nstate.wiki = action elif answer.nis.wiki and (not request.POST.get('wiki', False)) and request.user.can_cancel_wiki(answer): answer.nstate.wiki = None else: if not revision == answer.active_revision: RollbackAction(user=request.user, node=answer, ip=request.META['REMOTE_ADDR']).save(data=dict(activate=revision)) return HttpResponseRedirect(answer.get_absolute_url()) else: revision_form = RevisionForm(answer) form = EditAnswerForm(answer, request.user) return render_to_response('answer_edit.html', { 'answer': answer, 'revision_form': revision_form, 'form': form, }, context_instance=RequestContext(request)) def answer(request, id): question = get_object_or_404(Question, id=id) if request.POST: form = AnswerForm(question, request.POST) if request.session.pop('reviewing_pending_data', False) or not form.is_valid(): request.session['redirect_POST_data'] = request.POST return HttpResponseRedirect(question.get_absolute_url() + '#fmanswer') if request.user.is_authenticated() and request.user.email_valid_and_can_answer(): answer_action = AnswerAction(user=request.user, ip=request.META['REMOTE_ADDR']).save(dict(question=question, **form.cleaned_data)) answer = answer_action.node if settings.WIKI_ON and request.POST.get('wiki', False): answer.nstate.wiki = answer_action return HttpResponseRedirect(answer.get_absolute_url()) else: request.session['pending_submission_data'] = { 'POST': request.POST, 'data_name': _("answer"), 'type': 'answer', 'submission_url': reverse('answer', kwargs={'id': id}), 'time': datetime.datetime.now() } if request.user.is_authenticated(): request.user.message_set.create(message=_("Your answer is pending until you %s.") % html.hyperlink( reverse('send_validation_email'), _("validate your email") )) return HttpResponseRedirect(question.get_absolute_url()) else: return HttpResponseRedirect(reverse('auth_signin')) return HttpResponseRedirect(question.get_absolute_url()) def manage_pending_data(request, action, forward=None): pending_data = request.session.pop('pending_submission_data', None) if not pending_data: raise Http404 if action == _("cancel"): return HttpResponseRedirect(forward or request.META.get('HTTP_REFERER', '/')) else: if action == _("review"): request.session['reviewing_pending_data'] = True request.session['redirect_POST_data'] = pending_data['POST'] return HttpResponseRedirect(pending_data['submission_url'])